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Search: id:A071186
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A071186 prime(2n)-2*prime(n) is prime. +0
1
3, 4, 5, 6, 10, 11, 13, 15, 18, 19, 20, 26, 29, 33, 34, 37, 42, 43, 44, 49, 50, 60, 61, 62, 64, 65, 66, 72, 77, 79, 84, 89, 91, 92, 96, 97, 98, 99, 101, 103, 105, 109, 112, 118, 120, 126, 127, 128, 129, 130, 133, 135, 140, 144, 146, 152, 153, 155, 163, 166, 172, 173 (list; graph; listen)
OFFSET

1,1

PROGRAM

(PARI) for(n=1, 251, if(isprime(prime(2*n)-2*prime(n))==1, print1(n, ", ")))

CROSSREFS

Sequence in context: A059877 A047307 A138918 this_sequence A164977 A103033 A099561

Adjacent sequences: A071183 A071184 A071185 this_sequence A071187 A071188 A071189

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 10 2002

page 1

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.


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